<template>
  <view>
    <canvas canvas-id="vmGrHHftUUJeukYBDobUdshDaPlIBEBs" id="vmGrHHftUUJeukYBDobUdshDaPlIBEBs" class="charts" @touchend="tap"/>
  </view>
</template>
<!-- 双列分红 -->
	 <!-- import uCharts from '@/plugins/stan-ucharts/u-charts/u-charts.js'; -->
<script>
import uCharts from '@/uni_modules/qiun-data-charts/js_sdk/u-charts/u-charts.js';
var uChartsInstance = {};
export default {
  data() {
    return {
      cWidth: 750,
      cHeight: 500
    };
  },
  onReady() {
    //这里的 750 对应 css .charts 的 width
    this.cWidth = uni.upx2px(750);
    //这里的 500 对应 css .charts 的 height
    this.cHeight = uni.upx2px(500);
    this.getServerData();
  },
  methods: {
    getServerData() {
      //模拟从服务器获取数据时的延时
      setTimeout(() => {
        //模拟服务器返回数据，如果数据格式和标准格式不同，需自行按下面的格式拼接
        let res = {
            categories: ["2016","2017","2018","2019","2020","2021"],
            series: [
              {
                name: "目标值",
                data: [35,36,31,33,13,34]
              },
              {
                name: "完成量",
                data: [18,27,21,24,6,28]
              }
            ]
          };
        this.drawCharts('vmGrHHftUUJeukYBDobUdshDaPlIBEBs', res);
      }, 500);
    },
    drawCharts(id,data){
      const ctx = uni.createCanvasContext(id, this);
      uChartsInstance[id] = new uCharts({
        type: "column",
        context: ctx,
        width: this.cWidth,
        height: this.cHeight,
        categories: data.categories,
        series: data.series,
        animation: true,
        background: "#FFFFFF",
        color: ["#FAC858","#EE6666","#FAC858","#EE6666","#73C0DE","#3CA272","#FC8452","#9A60B4","#ea7ccc"],
        padding: [15,15,0,5],
        legend: {},
        xAxis: {
          disableGrid: true
        },
        yAxis: {
          data: [
            {
              min: 0
            }
          ]
        },
        extra: {
          column: {
            type: "group",
            width: 30,
            activeBgColor: "#000000",
            activeBgOpacity: 0.08,
            linearType: "custom",
            seriesGap: 5,
            linearOpacity: 0.5,
            barBorderCircle: true,
            customColor: [
              "#FA7D8D",
              "#EB88E2"
            ]
          }
        }
      });
    },
    tap(e){
      uChartsInstance[e.target.id].touchLegend(e);
      uChartsInstance[e.target.id].showToolTip(e);
    }
  }
};
</script>

<style scoped>
  .charts{
    width: 750rpx;
    height: 500rpx;
  }
</style>
